Latest Science The ‘Kraken’ subvariant XBB.1.5 sounds scary, but behind the headlines are clues to where COVID’s heading The XBB.1.5 subvariant, known informally as “Kraken”, is the latest in a menagerie of Omicron subvariants to dominate the headlines, following increasing detection in the United States and United Kingdom. But there have... 15 February, 20235 min read